When it comes to shopping online for industrial products, there is no other place better than tolexo. whether you are looking for office supplies for your new setup. 0 (eng) not present; no abnormality +/- (eng) uncertain/equivocal + (eng) present; noted ++ (eng) present significantly +++ (eng) present in excess +ve (eng) positive. X: abstract: effects of zeatin and kinetin on in vitro regeneration of hevea brasiliensis rrim 2025. nor mayati c.h. efforts were undertaken to improve regeneration.